--- loncom/interface/lonmsg.pm	2006/12/06 17:14:50	1.188
+++ loncom/interface/lonmsg.pm	2006/12/06 23:44:33	1.189
@@ -1,7 +1,7 @@
 # The LearningOnline Network with CAPA
 # Routines for messaging
 #
-# $Id: lonmsg.pm,v 1.188 2006/12/06 17:14:50 www Exp $
+# $Id: lonmsg.pm,v 1.189 2006/12/06 23:44:33 raeburn Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -601,7 +601,31 @@ sub store_sent_mail {
 sub foldersuffix {
     my $folder=shift;
     unless ($folder) { return ''; }
-    return '_'.&escape($folder);
+    my $suffix;
+    my %folderhash = &get_user_folders($folder);
+    if (ref($folderhash{$folder}) eq 'HASH') {
+        $suffix = '_'.&escape($folderhash{$folder}{'id'});
+    } else {
+        $suffix = '_'.&escape($folder);
+    }
+    return $suffix;
+}
+
+# ========================================================= User-defined folders 
+
+sub get_user_folders {
+    my ($folder) = @_;
+    my %userfolders = 
+          &Apache::lonnet::dump('email_folders',undef,undef,$folder);
+    my $lock = "\0".'lock_counter'; # locks db while counter incremented
+    my $counter = "\0".'idcount';   # used in suffix for email db files
+    if (defined($userfolders{$lock})) {
+        delete($userfolders{$lock});
+    }
+    if (defined($userfolders{$counter})) {
+        delete($userfolders{$counter});
+    }
+    return %userfolders;
 }
 
 1;